Allow certian MAC addresses for each certain branch on IC2

I had a setup for 100 branches and the customer need to allow certain MAC addresses/Devices to use the Peplink MAX-BR1 to connect them to its HQ network, then we need to add a firewall rules to each branch MAX-BR1 device to permit only certain MAC address in this branch,
my questions:

  • Is there any way to add multiple MAC addresses to one rule?
  • Is there any way to apply all rules by IC2 (each rule to its device), knowing that each rule have different MACs list?